Roof-ventilator.



W. SODEMANN.

- ROOF VENTILATOR.

APPLICATION FILED APR. 14. 1916.

1,235,609. Patented Aug. 7,1917.

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4 E "ATESPTET WILLIAM SODEMANN, or sr. LOUIS, MISSOURI.

ROOF-TENTILATOR.

Specification of Letters Patent.

Patented Aug. '7, 1917.

be ventilated, and a separate surrounding case forming'a passage for directing cur rents ofair past the upper open end of the outlet. pipe whereby the siphon or suction principle or action of the air currents is employed to accelerate the discharge or withdrawal of the air from the building, in combination with arelatively large chamber into which said pipe and case open, said chamber opening to atmosphere at its upper and lower ends and inclosing spaced protecting covers placed in a novel arrangement to protect the discharge end of the outlet pi e. .7 I

Dther objects reside in the particular construction and arrangement of the parts and will be apparent from .the following description without specific mention, reference being made to the drawing in which Figure 1 is a plan view of my improved Fig. 2 is a side elevation. Fig. 3 is a vertical sectional view on the line 3-3 ofjFi- 1.

' Y of the air from within the building shall be accelerated by currents ofair directed ad-' jac'ent to the upper open end of the pipe 1 to cause a suctionaction to aid in ventilating the building. For applying the currents of air in this manner the pipe 1 is inclosed within a case or shell 2 forming an annular passage 3 open at its upper and lower ends and completely surrounding the upper. part of the pipe 1. The. case or shell 2 may be supported in any preferred manner as by supporting arms 4 connecting the case 2 with the pipe 1, so that when said parts are assembled they are relatively stationary.

A deflecting shelf or apron 5 is attached to the pipe 1 and extends obliquely downwardly and outwardly below the lower open end of the passage 3, so that the air or wind coming in contact with the apron 5 will be deflected upwardly thereby into the passage 3. In this manner better and freer circulation of the air currents through the passage?) isobtained sothat continuous currents of airare passingthrough the passage "3 adjacent to the upperopen end of the pipe 1, and continuously serve to draw air from the pipe 1 thereby maintaining more perfect ventilation of the building. 1

As'shown the upper end of the case 2 is slightly above the end of the pipe 1 so that all of the air passing throughthe passage 8 is directed properly relative to theYopen end of the pipe 1.

An annularplate 6 of a diameter larger 1 pipe 1. The opening 7 provides a passage for the air, and the surrounding portion of the plate 6 deflects the rain and other falling substances so that they will drop outside the case 2 and will not be permitted to' fall;

within the pipe 1. Above theplate 6 an additional protecting plate 9 is supported,

'said plate being of larger area than the I opening 7 so that the rain and other substances falling upon the plate 9 will be deflected thereby on to the oblique plate 6 and discharged therefrom, thus preventing any of such substances from entering the ventilating pipe 1. The plate 9 is supported above the plate 6, by supporting members or brackets'10 holding said plate 9' properly in position to deflectthe falling substances, as described.

' The large cylinder 11 is supported at the upper portion of the device and surrounds H can iaa

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the upper end of the case 2, so that the air currents from the passage 3 and the air coming from the pipe 1 are discharged into the chamber formed by the cylinder 11 below the plate 6 which is also within said cylinder 11. It will be observed that the upper and lower ends of the cylinder 11 are open and that an annular passage is formed between the lower end of'the cylinder 11 and the upper end of the case. 2, thus, enabling currents of air to pass upwardly into the cylinder 11 to cooperate with the currents of airv coming from the passage3. The cyl inder 11 is supported in connection with the case 2 by connecting devices 12 and. is fur ther braced: in connection with the. plate. 6 by connecting members 13.

By reference to Figs. 2 and 3, it will be observed that the plate 9 is supported in a plane above theupper-end of the cylinder 11, thus permitting air currents or the wind to move freely across the upper end of the cylinder 11 below the plate 9 and above the plate 6, so as to assist in withdrawing from the cylinder 11 all of the air entering into it.

By the foregoing construction it will be observed that I attain a continuous upward movement of the air through the passage 3 and, also through the passage at the lower end; of the cylinder 11, and that such movement is maintained to a maximum degree, because of the substantially unobstructed construction and, arrangement ofthe passages and. further because of the provision of the apron 5.

It will also be observed that the top plate '9, being supported somewhat above the plane of the upper end of the cylinder 11, provides a, spacefor cross currents of air which cause rapid withdrawal or discharge of all of the air entering the cylinder 11. There is no restriction or obstruction to the free movement of the air, but on the contrary such movement is increased by the application of the several currents of air applying the principles of suction to the ventilator pipe.

What I- claim and desire'to secure by Let,-

ters Patent, is v 1;. In. a ventilator, a ventilating pipe, a separate case surrounding the ventilating pipe and being open at its upper and lower ends, an apron extending obliquely downwardly and outwardly from the ventilating pipebelow said. case to deflect the air into the lower end of said case, a cylinder encircling the upper ends of said pipe and case and being open at its upper and lower ends, and plates supported in, position to prevent rain and other falling substances from entering theventilating pipe.

2 In a ventilator, a pipe: for discharging air from the building, a separate case surrounding said pipe and extending. a distance above the upper end thereof and forming a passage around the discharge pipe open at its upper and lower ends, a device supported by said discharge pipe for deflecting air into the lower end of said case, a cylinder inclosing the upper ends of the discharge pipe and the case, a deflecting plate in axial alinement with said discharge pipe and provided with a central opening, and a plate supported above said opening.

8. In a ventilator, a ventilatingpipe for discharging air from the building, a case opening to atmosphere at its upper and lower ends surrounding. said ventilating pipe, a device for deflecting. air intov the lower end of said case, a cylinder inclosing the upper ends of said two passages and opening to atmosphere at its upper and lower ends, a plate supported above the ventilating pipe and having a central opening, and a plate supported above said opening and above the plane of the upper end of-said cylinder, whereby cross currents of air may move between said two plates transversely of said pipe and case to draw outthe air discharged into said cylinder by said pipe and case.

4t. lInaventilator,aventilating pipe, a case surrounding said, ventilating pipe and openlng to atmosphere at its upper and lower ends and having its upper end above the end of said pipe, a deflecting apron extending obliquely downwardly and outwardly be low said case whereby currentsof air are deflected upwardly into said case, a. cylinder enc rcling the upper end of said case and havlng a passagethereinto around said case, whereby currents of air may rise into said cylinder, a plate within said cylinder arranged to deflect fallingsubstances through the lower end of said cylinder outside of said case, said plate being provided with a central opening above the ventilating pipe, and a plate supported above said opening and above the plane ofithe upper end of said cylinder.

5. Ina ventilator, the combination of a ventilating pipe, a case encircling said: pipe and forming a continuous annular passage around the ventilating pipe open, at its upper and lower ends, a cylinder surrounding the upper end of said case and having open upper and lower ends, a deflectingplate above said pipe and case preventi ng falling substances from entering said pipe.- and' case and having aw central opening above the ven-- tilating pipe, and an additional plate above said deflecting plate of larger area than the opening therethrough.

6. In a ventilator, the combination of a ventilating pipe, a relatively large cylinder surrounding the upper portion of said pipe and arranged to receive the air discharged therefrom, a case surrounding saidpipe and forming a passage around, said pipe for admltting air 1nto said cylinder adj acent tothe upper end of said pipe, a; device for deflecting air into said case, and spaced deflecting In Witness whereof, I have signed this plates supported above said pipe and case specification in the presence of two subscriband arranged to deflect falling substances ing Witnesses. outside of said pipe, one of sald plates be- WILLIAM SODEMANN.

ing Within said cylinder and the other of Witnesses: said plates being above the plane of the up- L. O. KINGSLAND, per edge of said cylinder. N. G. BUTLER.

five cents each, by addressing the Commissioner of Patents,

Copies of this patent may be obtained for Y Washington, D. O. 

